| article html file updated | 1 September 2025 10:40 CEST | Update | https://www.mdpi.com/2227-7072/8/4/60 |
| article html file updated | 22 July 2022 20:44 CEST | Update | N/A |
| article html file updated | 25 October 2020 14:38 CET | Original file | N/A |
| article pdf uploaded. | 25 October 2020 14:37 CET | Updated version of record | https://www.mdpi.com/2227-7072/8/4/60/pdf |
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| article pdf uploaded. | 13 October 2020 11:03 CEST | Version of Record | https://www.mdpi.com/2227-7072/8/4/60/pdf-vor |
